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JEE Main & Advanced Chemistry Some Basic Concepts of Chemistry / रसायन की कुछ मूलभूत अवधारणाएँ Question Bank Chemical stoichiometry

  • question_answer
    What will be the volume of \[C{{O}_{2}}\]at NTP obtained on heating 10 grams of (90% pure) limestone           [Pb. CET 2001]

    A)                 22.4 litre

    B)                 2.016 litre

    C)                 2.24 litre

    D)                 20.16 litre

    Correct Answer: B

    Solution :

               \[\underset{10gm}{\mathop{CaC{{O}_{3}}}}\,\to CaO+C{{O}_{2}}\]                    90% pure 9gm \[=\frac{9}{100}\]mole                    \[CaC{{O}_{3}}\equiv C{{O}_{2}}=0.09\]mole                                 At NTP Vol.\[C{{O}_{2}}=0.09\times 22.4=2.016L\].


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